145500073 has 2 divisors, whose sum is σ = 145500074. Its totient is φ = 145500072.

The previous prime is 145500071. The next prime is 145500101. The reversal of 145500073 is 370005541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121264144 + 24235929 = 11012^2 + 4923^2 .

It is an emirp because it is prime and its reverse (370005541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145500073 - 2¹ = 145500071 is a prime.

Together with 145500071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145500071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72750036 + 72750037.

It is an arithmetic number, because the mean of its divisors is an integer number (72750037).

Almost surely, 2^145500073 is an apocalyptic number.

It is an amenable number.

145500073 is a deficient number, since it is larger than the sum of its proper divisors (1).

145500073 is an equidigital number, since it uses as much as digits as its factorization.

145500073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 145500073 is about 12062.3411077618. The cubic root of 145500073 is about 525.9620431197.

The spelling of 145500073 in words is "one hundred forty-five million, five hundred thousand, seventy-three".